<template>
  <div style="width: 100%; height: 100%">
    <div style="width: 100%; height: 100%" ref="Ech"></div>
  </div>
</template>
<script>
// 应用echarts主题
// import "echarts/theme/macarons.js";
import * as echarts from "echarts";
import "echarts-gl";
export default {
  title: "roundBar",
  data() {
    return {
      Echarts: null,
      title: "",
      config: { width: "70%" },
      value: 0,
      colors: [
        "#75bedc",
        "#ef6567",
        "#91cd77",
        "#f9c956",
        "#5470c6",
        "#3692FF",
        "#FF9900",
        "#669933",
        "#990066",
      ],
      Data: [],
    };
  },
  props: {
    legend: { type: Boolean, default: false },
    titleShow: { type: Boolean, default: false },
    titleCon: {
      type: Object,
      default: () => ({
        valueType: "value",
        subtext: "xx",
        left: "auto",
        top: "auto",
        right: "auto",
        bottom: "auto",
      }),
    },
  },
  mounted() {
    var that = this;
    let echartsL = echarts;
    this.$nextTick(() => {
      let echarts = echartsL.init(this.$refs.Ech, "macarons");
      this.Echarts = echarts;
      //   this.drawEchart();
      window.addEventListener("resize", () => {
        //重置容器高宽
        echarts.resize();
      });
    });
  },
  created() {},

  methods: {
    getInit(data, size) {
      setTimeout(() => {
        this.Echarts.setOption(this.getPie3D(data, size ? size : 0.6));
        this.Echarts.resize();
      }, 500);
    },
    getPie3D(pieData, internalDiameterRatio) {
      let series = [];
      let sumValue = 0;
      let startValue = 0;
      let endValue = 0;
      let legendData = [];
      let widths = 180;
      let k =
        typeof internalDiameterRatio !== "undefined"
          ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
          : 1 / 3;
      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value;

        let seriesItem = {
          name:
            typeof pieData[i].name === "undefined"
              ? `series${i}`
              : pieData[i].name,
          type: "surface",
          parametric: true,
          wireframe: {
            show: false,
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: 1 / 10,
          },
        };

        if (typeof pieData[i].itemStyle != "undefined") {
          let itemStyle = {};

          typeof pieData[i].itemStyle.color != "undefined"
            ? (itemStyle.color = pieData[i].itemStyle.color)
            : null;
          typeof pieData[i].itemStyle.opacity != "undefined"
            ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
            : null;

          seriesItem.itemStyle = itemStyle;
        }
        series.push(seriesItem);
      }

      // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
      // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
      for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value;

        series[i].pieData.startRatio = startValue / sumValue;
        series[i].pieData.endRatio = endValue / sumValue;
        series[i].parametricEquation = this.getParametricEquation(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        );

        startValue = endValue;

        legendData.push(series[i].name);
      }

      // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
      series.push({
        name: "mouseoutSeries",
        type: "surface",
        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: "#E1E8EC",
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -0.5 : -5;
          },
        },
      });

      // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
      series.push({
        name: "mouseoutSeries",
        type: "surface",
        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: "rgba(101, 153, 164, 0.24)",
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -5 : -7;
          },
        },
      });
      series.push({
        name: "mouseoutSeries",
        type: "surface",

        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: "#E1E8EC",
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2.2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2.2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -7 : -7;
          },
        },
      });

      // 准备待返回的配置项，把准备好的 legendData、series 传入。
      let option = {
        // fontFamily: "Source Han Sans CN",
        legend: {
          icon: "none",
          orient: "vertical",
          data: pieData.map((dItem, dIndex) => {
            return {
              ...dItem,
              textStyle: {
                rich: {
                  iconName: {
                    width: 12,
                    height: 10,
                    // borderRadius: 5,
                    backgroundColor: dItem.itemStyle.color,
                  },
                  percent: {
                    color: dItem.itemStyle.color,
                  },
                },
              },
            };
          }),
          right: "0%",
          top: "0",
          itemWidth: 12,
          itemHeight: 10,
          selectedMode: false, // 关闭图例选择
          textStyle: {
            color: "#fff",
            fontSize: 16,
            rich: {
              name: {
                color: "#FFF",
                fontSize: 16,
                padding: [0, 0, 0, 10],
              },
              value: {
                fontSize: 16,
                padding: [0, 0, 0, 30],
              },
              percent: {
                color: "#2BDFD4",
                fontSize: 16,
                padding: [0, 0, 0, 30],
              },
              unit: {
                color: "#ACDCE4",
                fontSize: 16,
                padding: [0, 0, 0, 5],
              },
            },
          },
          formatter: (name) => {
            let obj = pieData.find((item) => item.name === name);
            let datas = pieData;
            let total = 0;
            let target = obj.value;
            for (let i = 0; i < datas.length; i++) {
              total += Number(datas[i].value);
            }
            const arr = [
              `{iconName|}{name|${name}}{percent|${obj.value} ${
                obj.unit ? obj.unit : ""
              }}{percent|${
                target && total ? ((target / total) * 100).toFixed(0) : 0
              }%}`,
            ];
            return arr.join("");
          },
        },

        xAxis3D: {},
        yAxis3D: {},
        zAxis3D: {},
        grid3D: {
          viewControl: {
            autoRotate: false, // 自动旋转
          },
          left: "0%",
          boxWidth: widths,
          boxDepth: widths,
          width: this.config.width,
          show: false,
          boxHeight: 70,
        },
        series: series,
      };
      return option;
    },
    getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) {
      // 计算
      let midRatio = (startRatio + endRatio) / 2;

      let startRadian = startRatio * Math.PI * 2;
      let endRadian = endRatio * Math.PI * 2;
      let midRadian = midRatio * Math.PI * 2;

      // 如果只有一个扇形，则不实现选中效果。
      // if (startRatio === 0 && endRatio === 1) {
      //     isSelected = false;
      // }
      isSelected = false;
      // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
      k = typeof k !== "undefined" ? k : 1 / 3;

      // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
      let offsetX = isSelected ? Math.sin(midRadian) * 0.1 : 0;
      let offsetY = isSelected ? Math.cos(midRadian) * 0.1 : 0;

      // 计算高亮效果的放大比例（未高亮，则比例为 1）
      let hoverRate = isHovered ? 1.05 : 1;

      // 返回曲面参数方程
      return {
        u: {
          min: -Math.PI,
          max: Math.PI * 3,
          step: Math.PI / 32,
        },

        v: {
          min: 0,
          max: Math.PI * 2,
          step: Math.PI / 20,
        },

        x: function (u, v) {
          if (u < startRadian) {
            return (
              offsetX +
              Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          if (u > endRadian) {
            return (
              offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        y: function (u, v) {
          if (u < startRadian) {
            return (
              offsetY +
              Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          if (u > endRadian) {
            return (
              offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        z: function (u, v) {
          if (u < -Math.PI * 0.5) {
            return Math.sin(u);
          }
          if (u > Math.PI * 2.5) {
            return Math.sin(u) * h * 0.1;
          }
          return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
        },
      };
    },
  },
  beforeDestroy() {
    if (this.Echarts) {
      // 清除实例，释放资源
      this.Echarts.dispose();
      // 将实例设为null，避免潜在的内存泄漏
      this.Echarts = null;
    }
  },
};
</script>
